First differences of A160119.

Terms

a(0) =1a(1) =26a(2) =8a(3) =200a(4) =8a(5) =200a(6) =56a(7) =1400a(8) =8a(9) =200a(10) =56a(11) =1400a(12) =56a(13) =1400a(14) =392a(15) =9800a(16) =8a(17) =200a(18) =56a(19) =1400a(20) =56a(21) =1400a(22) =392a(23) =9800a(24) =56a(25) =1400a(26) =392a(27) =9800a(28) =392a(29) =9800